British Swim School offers swimming lessons for kids and adults of all ages, starting as early as 3 months. Located inside of The Retreat at Bothell, our swim school is open year-round, so you can learn to swim when youāre ready and continue until youāve mastered the skills. We use gentle teaching methods and a survival-first approach to help swimmers of all levels become safer and more confident in the water. Our safe, fun, and effective teaching methods have made us the preferred choice for parents and students for over 40 years. Our confidence-building curriculum and small group swimming classes provide a consistent format and structure with one-on-one attention for each swimmer. Private swimming lessons are subject to availability.